Demothing product



Patented M .5 i a which a lethal atmosphere DEMOTHING PBDDUCT Faw YapChuck, San Francisco, Calif., asslgnor to Lindauer and Co.,,-SanFranclsc oopartnership consistin Arthur G. Lindauer gof Earl Marion! 0,a and No-lhawing. Application osteoa- 21,1940

- .Serlal'No.-382,093

. 1 Claim. (01.16'i-37.)

. ingredients, I make use of a suitable glycol such 1 This inventionrelates generally to products v as glycerin. In addition, relativelyslow drying suitable for demothin losets or like spaces in which clothesor other goods are being stored,

and to methods for their manufacture. More particularly, it relates to aproduct which can be placed within a'closet or like confined space, and

" whichfwill maintain an atmosphere lethal to moths, and moth larvae andegg It is an object of the invention to provide a product of the abovecharacter capable of main taining alethal atmosphere over a, relativelylong period of time. In this connection, the invention diflers fromproducts now available on the relatively short period of effectiveness,after m is norlonger Cedar'oil pound 5 ta d. P A further object or'uieinvention is to provide 7 ggfigfggiggggffigs 5 12 lemming pmduct havingdesirable" Pyrethrum extract (i ii I QB S;;1;; ad0 /2 properties ofcedar wood, including a pronounced ture content in the final productwhich is in excess of theaverage natural moisture content of cedarwood'sawdustn This result is also ac-' complished by the presence of aglycol, like: glyccedar odor, together with properties making it ferredembodiments have been set forth in detail.

The present invention makes use of certain highly volatile materialswhich are known to be 1 effective in maintaining an atmosphere lethal tomoths. However, too rapid evaporation of the active ingredients isprevented by having the ingradients absorbed in aporous absorbentmedium.

This medium is preferably fragments ofcedar wood. and the natural" odorand other volatile constituents of the cedar wood which are known to bedesirable for demothi'ng and deodorizatiom are enhanced by thepresenceof one or more in gredients serving to aid hydrolysis. Y As stated,above, the porous absorbent medium sawdust or cedar chips. The materialemployed to impregnate the cedar wood contains one or ing an atmospherelethal to moths, and also their e s and larvae. Among active ingredientsof this type which are known to be effective to maintain the desiredlethal atmosphere, I can 'make reference to paradichlorobenzene,ethylene dichloride, camphor, and trichlorobenzene. V

' In. addition to lethal ingredients which-are highly volatile,- Ipreferably include a lethal material capable .of killing by contact,such as pyrethrum extract. As materials capable of inhibitin: too rapidvolatilization of. the volatile lethal? so that the liquid ingredientsare homog enously distributed and-absorbed. by the wood,

- employed is preferably cedar wood such as cedar more highly-volatilematerials capable of producerine, and also by introducing water intoproduct as it is being manufactured. V

As a specific example for practicing the present invention, a solutionis prepared as follows:

the-

' a mixture of the above ingredients is diluted? ,by addition ofcarbitol to make about 6 gallons liquid material. D

A second solution is prepared consisting oi equal parts of glycerin andwater, and this second solution,is then added to the first solution toform a temporary emulsion Equal quantities of the first and secondsolutions can be used. The emulsion formed as described above isintermixed with cedar sawdust to cause the savvdust to absorb the liquidmaterial. In practice, about one gallon of the emulsion-will suflice toimpregnate about 300 to 400 .pounds of sawdust,

.Aiter thoroughly intermixing the liquid with the' sawdust, themater'ialis agitated in'a suitable fiber. The resulting product can be packed incartons for distribution to the trade. A convenient carton consists of acloth bag which is sealed by an outer bag of moistureproof Cellophane.To use such a bag for demothing a closet, one removes the moistureprooiCellophane cover and. then the bag is placed within the closet;Volatilization or the paradichlorobenzene and ethylene dichloride serves.to'maihtain an atmosphere within the closet which is lethal-to mothsand; also to moth larvae and eggs. At the same time, the naturalaromatic and volatile ingredients'of the cedar wood are effective forthe same purpose, and also as a deodorizen .In this conneifiaion, themore powerful lethal ingredients, namely the paradichlorobenzene andethylene dichloride. do not of the peredichlorohenzene and ethylenedichloride, and in eddition it aids in meintuining e water content inthe cedar wood such as promotes the evolution of the natural desirablevolattile constituents of cedar wood. In this connectlon, I hove simplyimpregnated oedertvood sewdust with e solution of glycerin and wetter,with the result that the cedar odor of the wood is greatly enhanced, andthe natural volatile conetitueiits of the wood which are known to beefiective in demothing are evolved for more efiectively, end theirevolution maintained over e. 20 the cedar wood.

relatively long goeriod or time. I ettrihute this to e. hydrolysihgaction which promotes the volestereos? tilizetion or evolution ofaromatic ingredients of the wood. In place of glycerin, I can maize useof 0 her glycols, such as propylene or ethylene glyc l, or mixtures ofglycols. However, glycerin has given best results. In addition to itsfunctions described above, glycerin has a. sweetlsh odor, tending toattract moths and other insects.

When. a. moth comes into direct contest with the product, it is killedby the lethal ingredients, perticulerly by the pyrethrum extract.

I claim:

As a new article of manufacture, fragments of cedar woo impregnated withe, solution contaming parsdichlorobenzene, ethylene dichloride, a,hydrocarbon solvent, and glycerin, the glycerin component of saidsolution being sufficient to reduce the volatilizotiou of theperedichlorobenzine and ethylene dichloride and to promote the voletilization of the natural volatile constituents of FAW YA? CH UCK.

